chore: remove STJ reference for net8.0 and above

Author: ikesnowy

.github/workflows/ci.yml

@@ -4,7 +4,7 @@ on:
   push:
     branches: [ "main" ]
   pull_request:
-    branches: [ "main" ]
+    branches: [ "main", "staging" ]
 
 jobs:
   test-net6:

Directory.Build.props

@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFrameworks>net6.0;net8.0</TargetFrameworks>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <Authors>Cnblogs</Authors>

src/Cnblogs.DashScope.AI/Cnblogs.DashScope.AI.csproj

@@ -1,6 +1,5 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
     <Product>Cnblogs.DashScope.AI</Product>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <PackageTags>Cnblogs;Dashscope;Microsoft.Extensions.AI;Sdk;Embedding;</PackageTags>

src/Cnblogs.DashScope.Core/Cnblogs.DashScope.Core.csproj

@@ -13,7 +13,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.DeepDev.TokenizerLib" Version="1.3.3" />
-    <PackageReference Include="System.Text.Json" Version="8.0.6" />
+    <PackageReference Include="System.Text.Json" Version="8.0.0" Condition="'$(TargetFramework)' == 'net6.0'" />
   </ItemGroup>
 
 </Project>